power supply
http://i60.tinypic.com/2ex5u9i.jpghttp://i62.tinypic.com/15dvoza.jpgswitch board
also the power supply in this batch have a known bug, the remain electricity will stop it working after power off , so if you find it is dead after powering off, you need wait 30-60 min to lease the remain electricity or re-plug the 24 pin cable in switch board to lease it
This is not a bug of the PSU.
These are 750 watt PSU.
2 pci-e connectors plus 1×8 pin motherboard cable split into 2 pci-connectors with an adapter.
Replace the PSU will solve all your problems.
If you keep using thid PSU, your house will burn down, thanks to Mr. Lee.
The prior generation of 1T Dragon miners which draw approximately 1kW at the wall have 1000W PSUs in them and the current ones are supposedly equipped with 1200-Watters. Where did you get your information that they only have 750W PSUs. If your information is accurate, then it is very "alarming" (pun intended).
Look at the total of the pci-e connectors at the PSU casing and the size of the PSU case.
I see what you mean...a keen observation on your part. Though these pictures are an improvement to the ones posted in the past, important details are still being obscured. I see only 2 modular PCIe connections on the PSU side and nothing more. There are still 2 PCIe cables/connectors unaccounted for to power the remaining 2 modules. Did they use splitters on each PCIe modular connection to come up with a total of 4 PCIe connectors to power 4 modules or split the 8-pin 12V EPS cable to 2 PCIe connectors to power the remaining 2 modules as you alluded? Either way, it's not kosher and the fact that there is no label on the PSU itself is not very reassuring.
A typical 750W ATX PSU would have around 4 dedicated PCIe connectors; 2 dedicated PCIe connectors for a 650W or a 500W PSU. So, why is a 500W or a 650W PSU powering up a kilowatt device? Even a 750W as you alluded has no business being in this 1 kilowatt (at the wall) hot box. Even a 1000W PSU is questionable.
Look at the bottom picture, beside the 2 pci-e connectors, you can see 1 motherboard cable, 1×4+4 cable and 1×8 pin cable.
The cable with the 8 pin is powering 2 modules via an adapter with 2 pci-e connectors. This can not be seen on this picture. I have seen this somewhere, just need to search for that picture again.
Mr. Lee probably switch the better PSU for a cheap one and sold the good ones somewhere else.
